Intosoft 工具

PST to EDT

+4h

PST

PSTSOURCE
UTC-07:00☀ DST active
HH12
:
MM00
  
12:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM

EDT

EDT
UTC-04:00☀ DST active
HH04
:
MM00
  
16:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM
PST
EDT
12:00 AM
3:00 AM
2:00 AM
5:00 AM
4:00 AM
7:00 AM
6:00 AM
9:00 AM
8:00 AM
11:00 AM
10:00 AM
1:00 PM
12:00 PM
3:00 PM
2:00 PM
5:00 PM
4:00 PM
7:00 PM
6:00 PM
9:00 PM
8:00 PM
11:00 PM
10:00 PM
1:00 AM+1

Green rows indicate typical business hours (9 AM - 5 PM)

PST and EDT on the World Map

The map below highlights the PST (Pacific Standard Time) and EDT (Eastern Daylight Time) timezone regions across the globe.

PSTEDTLos AngelesSan FranciscoSeattleVancouverNew York CityWashington D.C.TorontoMiami
PST Zone
→
EDT Zone

Explore all world timezones interactively →

PST – Pacific Standard Time

UTC-08:00

Pacific Standard Time (PST) is the time zone for the US and Canadian Pacific coast, 8 hours behind UTC.

Countries in PST
United States (Pacific)Canada (British Columbia)Mexico (Baja California)
Major Cities in PST
Los AngelesSan FranciscoSeattleVancouverSan DiegoPortlandLas VegasSacramentoSan JoseTijuana
Key Facts about PST
  • •Silicon Valley and the world's biggest tech companies operate on Pacific Time.
  • •The Hollywood film industry runs on PST/PDT.
  • •PST is 3 hours behind EST, creating a significant business hours gap.
  • •Vancouver, Canada's third-largest city, uses PST.
Daylight Saving:Yes – switches to PDT
Learn more about PST on Wikipedia

EDT – Eastern Daylight Time

UTC-04:00

Eastern Daylight Time (EDT) is the daylight saving time observed in the Eastern Time Zone, 4 hours behind UTC.

Countries in EDT
United States (Eastern)Canada (Ontario, Quebec)BahamasHaitiTurks and Caicos
Major Cities in EDT
New York CityWashington D.C.TorontoMiamiPhiladelphiaAtlantaBostonMontreal
Key Facts about EDT
  • •EDT is observed from the second Sunday of March to the first Sunday of November.
  • •During EDT, the US East Coast is only 4 hours behind London (instead of 5).
  • •Not all EST locations switch to EDT – Panama and Jamaica stay on EST year-round.
Daylight Saving:Yes – switches to EST
Learn more about EDT on Wikipedia

Understanding the +4h Gap: PST vs EDT

PST runs on Pacific Standard Time (PST) at UTC-08:00. EDT runs on Eastern Daylight Time (EDT) at UTC-04:00. That puts PST 4 hours ahead of EDT — a difference of +4h at the current offsets.

In practice, when it is 9:00 AM in PST it is 1:00 PM in EDT. Midnight in PST is 4:00 AM in EDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

PST to EDT time conversion table

PST (PST)EDT (EDT)Day
12:00 AM4:00 AMsame day
6:00 AM10:00 AMsame day
7:00 AM11:00 AMsame day
8:00 AM12:00 PMsame day
9:00 AM1:00 PMsame day
12:00 PM4:00 PMsame day
3:00 PM7:00 PMsame day
5:00 PM9:00 PMsame day
6:00 PM10:00 PMsame day
9:00 PM1:00 AMnext day

Why people convert PST to EDT time

  • Scheduling a call from PST to EDT: a 10:00 AM start in PST lands at 2:00 PM in EDT, so you can confirm the slot without doing the arithmetic yourself.
  • Finding shared working hours: both PST and EDT are inside the 9-to-5 working day between 9:00 AM and 1:00 PM PST time (1:00 PM–5:00 PM EDT). That is roughly 4 hours of usable overlap.
  • Keeping family and friends in sync: knowing that 8:00 PM in PST is 12:00 AM in EDT makes it easy to avoid calling at 3 AM.
  • Always state the zone abbreviation, not just the hour. "3:00 PM PST" is unambiguous; "3 PM" across a +4h gap is not.
  • Block 9:00 AM–1:00 PM PST as the recurring meeting window if you work primarily from PST and need EDT colleagues present.

About PST (Pacific Standard Time)

Pacific Standard Time (PST) covers the west coast of North America, including tech hubs like San Francisco and Seattle, and entertainment capital Los Angeles. The Pacific Time Zone is home to Silicon Valley and the world's largest technology companies. During summer, clocks advance to Pacific Daylight Time (PDT, UTC-07:00). PST is also observed in Baja California, Mexico.

About EDT (Eastern Daylight Time)

Eastern Daylight Time (EDT) is used during the summer months (second Sunday of March to the first Sunday of November) in the Eastern Time Zone. During EDT, clocks are advanced by one hour to take advantage of longer daylight hours. Not all locations in the Eastern Time Zone observe DST – Panama, Jamaica, and most of the Caribbean remain on EST year-round.

Best time to call between PST and EDT

Both PST and EDT sit inside the 9 AM – 5 PM working day between 9:00 AM–1:00 PM PST, which is 1:00 PM–5:00 PM EDT. That gives roughly 4 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

PST and EDT overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.

PST is 4 hours ahead of EDT (PST UTC-08:00 → EDT UTC-04:00). The shared working window is 9:00 AM–1:00 PM PST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

PST

☀ Currently in DST

Standard: UTC-08:00 · DST: UTC-07:00

Clocks fall back on Sun, Nov 1, 2026

EDT

☀ Currently in DST

Standard: UTC-05:00 · DST: UTC-04:00

Clocks fall back on Sun, Nov 1, 2026

Frequently Asked Questions

What is the time difference between PST and EDT?

PST (PST, UTC-08:00) is 4 hours ahead of EDT (EDT, UTC-04:00). The gap is currently +4h.

How do I convert PST time to EDT time?

Add +4h to PST local time. For example, 9:00 AM in PST is 1:00 PM in EDT.

What time is it in EDT right now?

EDT uses EDT at UTC-04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +4h offset from PST.

What is the best time to call EDT from PST?

Call between 9:00 AM and 1:00 PM PST — that maps to 1:00 PM–5:00 PM EDT and keeps both parties inside the working day.

Which is ahead, PST or EDT?

PST is 4 hours ahead of EDT. When it is 12:00 PM in PST it is 4:00 PM in EDT.

Does daylight saving time affect the PST–EDT difference?

Neither zone observes daylight saving time, so the +4h offset between PST and EDT is fixed all year.

Which other cities share PST's time zone?

PST also covers Los Angeles, San Francisco, Seattle, Vancouver, San Diego, Portland, Las Vegas, Sacramento and 2 more.

Which countries use PST, PST's zone?

PST is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).

Is there a day difference between PST and EDT?

Not normally. The +4h gap only pushes the date over for late-evening times.

What is the time difference between PST and EDT?

EDT is +4h from PST.

What timezone is PST in?

PST operates on its local timezone.

What timezone is EDT in?

EDT operates on its local timezone.

Which countries use PST (Pacific Standard Time)?

PST is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).

Does PST observe daylight saving time?

Yes, PST switches to PDT during summer months.

What are some interesting facts about PST?

Silicon Valley and the world's biggest tech companies operate on Pacific Time. The Hollywood film industry runs on PST/PDT.

Which cities are in the EDT timezone?

Major cities in the EDT timezone include New York City, Washington D.C., Toronto, Miami, Philadelphia, Atlanta, Boston, Montreal.

What is the UTC offset for EDT?

Eastern Daylight Time (EDT) is at UTC-04:00. During daylight saving time, it shifts to EST.

What should I know about the EDT timezone?

EDT is observed from the second Sunday of March to the first Sunday of November. During EDT, the US East Coast is only 4 hours behind London (instead of 5).

When is it midnight in PST, what time is it in EDT?

When it is 12:00 AM (midnight) in PST (PST), it is +4h later in EDT (EDT).